/*
 * @Author: czy
 * @Date: 2021-07-09 14:02:11
 * @LastEditTime: 2021-07-14 20:33:09
 */
#include "sys/system.h"

#include "lib/input.h"
#include "lib/output.h"

/**
 * @description: Initialization.
 */
void IO_init(void)
{
    setenv("history", his_pointer());
    timer(check_input_port, 50);
    vga_clear();
    uart_clear();
}